Catalog Add On: BETA Low-Voltage Circuit Protection ...

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4 BETA Protecting SITOR Semiconductor Fuses Configuration Varying load with known load cycle Direct current: Id1 = 1200 A t1 = 20 s Id2 = 500 A t2 = 240 s Id3 = 1000 A t3 = 10 s Id4 = 0 A t4 = 60 s Fuse current: ILa1 = 1200 x 0.58 = 696 A ILa2 = 500 x 0.58 = 290 A ILa3 = 1000 x 0.58 = 580 A R.m.s. value of load current Selected: 3NE3 333 SITOR fuse link (450 A/1000 V), WL = 1 Breaking I 2 t value I 2 t A = 175 x 10 3 x 0.53 = 93 x 10 3 A 2 s Test cross-section to page 5/54: 320 mm 2 The following correction factors are to be applied: ku = 1.02 (ϑu = +35 °C) kq = 0.94 (conductor cross-section, double-ended, 50 % of test cross-section) kλ = 1.0 (conduction angle λ = 120°) kl = 1.0 (no forced-air cooling) 1. Required rated current In of the SITOR fuse link: 1 In ≥ IEff × ------------------------------------------------- = 493 A ku × kq × kλ × kl × WL Permissible load current I n' of the selected fuse link: I n ’ = k u x k q x k λ x k l x WL x I n = 1.02 x 0.94 x 1.0 x 1.0 x 1.0 x 450 = 431 A 2. Checking the permissible overload duration of current blocks exceeding the permissible fuse load current I n '. Previous load ratio: Residual value factor RW: for V = 0.74 of curve a (characteristic curve page 5/58, frequent surge/load cycle currents) RW = 0.2 Current block I La1: melting time t vs: 230 s (from time/current characteristic curve for 3NE3 333) t vs x RW = 230 s x 0.2 = 46 s > t 1 Current block I La3: melting time t vs: 1200 s from time/current characteristic curve for 3NE3 333) t vs x RW = 1200 s x 0.2 = 240 s > t 3 4/64 = = $ ' $ ) = ! # & ) A BB ! % ) = ' ) J J J ! J " 5 , ! ! I 696 Ieff 2 20 290 2 × + 240 580 2 × + × 10 = -------------------------------------------------------------------------------- = 317A 330 1 317 A × --------------------------------------------------------------------- = 331 A 1, 02× 0, 94× 10 , × 10 , × 1, 0 Ieff 317 V = ------ = ------- = 074 , In ′ 431 Siemens ET B1 AO · 2008, Characteristic curves J 1 $ # # © Siemens AG 2007 Occasional surge load from preloading with unknown surge outcome = prev " $ ) Direct current: Idprev = 700 A Idsurge = 500 A tsurge =8s Fuse current: Iprev = Idprev x 0.58 = 406 A Isurge = Idsurge x 0.58 = 1015 A Conditions: tinterval ≥ 3 tsurge and tinterval ≥ 5 min must be fulfilled. Selected: 3NE3 333 SITOR fuse link (560 A/1000 V), WL = 1 Breaking I 2 t value I 2 tA = 360 x 10 3 x 0.53 = 191 x 10 3 A 2 s Test cross-section to page 5/54: 400 mm 2 The following correction factors are to be applied: ku = 1.02 (ϑu = +35 °C) kq = 0.91 (conductor cross-section, double-ended, 40 % of test cross-section) kλ = 1.0 (conduction angle λ = 120°) kl = 1.0 (no forced-air cooling) 1. Required rated current In of the SITOR fuse link: 1 In ≥ Ivor × ------------------------------------------------- = 493 A ku × kq × kλ × kl × WL Permissible load current I n' of the selected fuse link: I n' = k u x k q x k λ x k l x WL x I n = 1.02 x 0.91 x 1.0 x 1.0 x 1.0 x 560 = 520 A 2. Checking the permissible overload duration of the surge current I surge Previous load ratio: Ivor 406 V = ------- = ------- = 078 , In ′ 520 Residual value factor RW: for V = 0.78 of curve a (characteristic curve page 5/58, frequent surge/load cycle currents) RW = 0.18 Surge current Isurge: melting time tvs: 110 s (from time/current characteristic curve for 3NE3 333) tvs x RW = 110 s x 0.18 = 19.8 s > tsurge Correction factors can be found on page 5/54 and page 5/55. J surge surge # ) & I 1 406 A × --------------------------------------------------------------------- = 437 A 1, 02× 0, 91× 10 , × 10 , × 1, 0 J 1 $ # $ 7
Automation and Drives Catalog Interactive catalog on CD-ROM and on DVD • The Offline Mall of Automation and Drives CA 01 Automation Systems for Machine Tools SINUMERIK & SIMODRIVE NC 60 SINUMERIK & SINAMICS NC 61 Drive Systems Variable-Speed Drives SINAMICS G110/SINAMICS G120 Inverter Chassis Units SINAMICS G120D Distributed Frequency Inverters D11.1 SINAMICS G130 Drive Converter Chassis Units, SINAMICS G150 Drive Converter Cabinet Units D11 SINAMICS GM150/SINAMICS SM150 Medium-Voltage Converters D12 SINAMICS S120 Drive Converter Systems D21.1 SINAMICS S150 Drive Converter Cabinet Units D21.3 Asynchronous Motors Standardline D 86.1 Synchronous Motors with Permanent-Magnet Technology, HT-direct D 86.2 DC Motors DA 12 SIMOREG DC MASTER 6RA70 Digital Chassis Converters DA 21.1 SIMOREG K 6RA22 Analog Chassis Converters DA 21.2 SIMOREG DC MASTER 6RM70 Digital Converter Cabinet Units DA 22 SIMOVERT PM Modular Converter Systems DA 45 SIEMOSYN Motors DA 48 MICROMASTER 410/420/430/440 Inverters DA 51.2 MICROMASTER 411/COMBIMASTER 411 DA 51.3 SIMOVERT MASTERDRIVES Vector Control DA 65.10 SIMOVERT MASTERDRIVES Motion Control DA 65.11 Synchronous and asynchronous servomotors for SIMOVERT MASTERDRIVES DA 65.3 SIMODRIVE 611 universal and POSMO Low-Voltage Three-Phase-Motors DA 65.4 IEC Squirrel-Cage Motors D 81.1 IEC Squirrel-Cage Motors · New Generation 1LE1 D 81.1 N PDF: Geared Motors M 15 Automation Systems for Machine Tools SIMODRIVE Main Spindle/Feed Motors Converter Systems SIMODRIVE 611/POSMO NC 60 Automation Systems for Machine Tools SINAMICS Main Spindle/Feed Motors Drive System SINAMICS S120 NC 61 Drive and Control Components for Hoisting Equipment HE 1 Electrical Installation Technology PDF: ALPHA Small Distribution Boards and Distribution Boards, Terminal Blocks ET A1 PDF: ALPHA 8HP Molded-Plastic Distribution System ET A3 PDF: BETA Low-Voltage Circuit Protection ET B1 PDF: DELTA Switches and Socket Outlets ET D1 GAMMA Building Controls ET G1 Human Machine Interface Systems SIMATIC HMI ST 80 PDF: These catalogs are only available as pdf files. © Siemens AG 2007 Catalogs of the Automation and Drives Group (A&D) Further information can be obtained from our branch offices listed in the appendix or at www.siemens.com/automation/partner Industrial Communication for Automation and Drives Catalog IK PI Low-Voltage Controls and Distribution – LV 1 SIRIUS, SENTRON, SIVACON Controls and Distribution – LV 1 T Technical Information SIRIUS, SENTRON, SIVACON SIDAC Reactors and Filters LV 60 SIVENT Fans LV 65 SIVACON 8PS Busbar Trunking Systems LV 70 Motion Control System SIMOTION PM 10 Process Instrumentation and Analytics Field Instruments for Process Automation Measuring Instruments for Pressure, Differential Pressure, Flow, Level and Temperature, Positioners and Liquid Meters FI 01 PDF: Indicators for panel mounting MP 12 SIREC Recorders and Accessories MP 20 SIPART, Controllers and Software MP 31 SIWAREX Weighing Systems WT 01 Continuous Weighing and Process Protection WT 02 Process Analytical Instruments PA 01 PDF: Process Analytics, Components for the System Integration PA 11 SIMATIC Industrial Automation Systems SIMATIC PCS Process Control System ST 45 Products for Totally Integrated Automation and Micro Automation ST 70 SIMATIC PCS 7 Process Control System ST PCS 7 Add-ons for the SIMATIC PCS 7 Process Control System ST PCS 7.1 Migration solutions with the SIMATIC PCS 7 Process Control System ST PCS 7.2 pc-based Automation ST PC SIMATIC Control Systems ST DA SIMATIC Sensors Sensors for Factory Automation FS 10 Systems Engineering Power supplies SITOP power KT 10.1 System cabling SIMATIC TOP connect KT 10.2 System Solutions Applications and Products for Industry are part of the interactive catalog CA 01 TELEPERM M Process Control System PDF: AS 488/TM automation systems PLT 112 A&D/3U/En 17.09.07
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eta BETA Low-Voltage Circuit Protec
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s BETA Low-Voltage Circuit Protecti
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© Siemens AG 2007 BETA Protecting
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Partial range fuses (aM, aR) exclus
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■ Characteristic curves Series 5S
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Series 5SA2 Size: E16 Characteristi
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Series 5SB2, 5SB4, 5SC2 Size: DII,
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Series 5SD8 Size: DIII Operational
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Series 3NW6 0 Size: 10 mm × 38 mm
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Series 3NW6 2 Size: 22 mm × 58 mm
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Series 3NW8 Size: 10 mm × 38 mm 14
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Series 3NW1 ...-0HG Time/current ch
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Series 3NA3 0 Size: 0 Operational c
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Series 3NA3 1..-6, 3NA6 1..-6, 3NA7
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Series 3NA3 2..-6, 3NA6 2..-6, 3NA7
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Series 3NA3 3..-6 Size: 3 Operation
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Series 3NA3 6 Size: 4a Operational
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Series 3NA3 8, 3NA6 8, 3NA7 8 Size:
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Series 3NA6 1..-4 Size: 1 Operation
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Series 3NA6 8..-4/-4KK Size: 000, 0
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Series 3ND1 3.., 3ND2 Size: 1, 2, 3
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Page 45 and 46:
Use in switch disconnectors When us
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© Siemens AG 2007 *) Temperature r
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Un = Rated voltage BG = Size In = R
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Un = Rated voltage BG = Size In = R
Page 55 and 56: © Siemens AG 2007 BETA Protecting
Page 57 and 58: Series 3NC3 2 Size: 3 Operational c
Page 59 and 60: Series 3NC5 531, 3NC5 8.. Operation
Page 61 and 62: Series 3NC8 4.. Size: 3 Operational
Page 63 and 64: Series 3NE1 022.-2, 3NE1 2..-2, 3NE
Page 65 and 66: Series 3NE1 4..-2 Size: 3 Operation
Page 67 and 68: Series 3NE1 8..-0 Size: 000 Operati
Page 69 and 70: Series 3NE3 23. Size: 1 Operational
Page 71 and 72: Series 3NE3 4.., 3NE3 6.. Size: 3 O
Page 73 and 74: Series 3NE4 1.. Size: 0 Operational
Page 75 and 76: Series 3NE4 3..-6B, 3NE4 337-6 Oper
Page 77 and 78: Series 3NE5 6.. Size: 3 Operational
Page 79 and 80: Series 3NE6 4.., 3NE9 4.. Operation
Page 81 and 82: Series 3NE8 0..-1 Size: 00 Operatio
Page 83 and 84: Series 3NE8 72.-1, 3NE8 731-1 Size:
Page 85 and 86: ■ Technical specifications Cylind
Page 87 and 88: ■ Characteristic curves Series 3N
Page 89 and 90: Series 3NC1 415, 3NC1 42., 3NC1 440
Page 91 and 92: Series 3NC2 2 Size: 22 mm × 58 mm
Page 93 and 94: ■ Technical specifications © Sie
Page 95 and 96: Series 5SD4, 5SD5 Size: DII, DIII,
Page 97 and 98: Correction factor; ambient temperat
Page 99 and 100: I 2 t values In the event of a shor
Page 101 and 102: Let-through current I c The let-thr
Page 103 and 104: Peak arc voltage Ûs The peak arc v
Page 105: Occasional surge load from preloadi
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